Convert CSV to JSON

The first row of the CSV becomes the keys, and each following row becomes one JSON object in an array. The delimiter is detected, so comma, semicolon and tab-separated files all work, and quoted values containing commas or line breaks are parsed correctly.

Real-world CSV is messier than it looks: quoted fields with commas inside, line breaks within a cell, escaped quotes, a stray BOM at the start of the file. A proper CSV parser handles all of these, so you don't end up with a JSON object that has shifted columns.

Make sure the header row has unique, non-empty names, because duplicate or blank headers make awkward keys. If the CSV is messy, with blank rows, extra spaces or duplicates, run it through the CSV cleaner first.

Customer lists and exported records are parsed by your browser, so no server ever sees them. The work happens in your browser, so nothing is uploaded and nothing is stored on a server. Once the page has loaded it keeps working offline, and it's free, with no sign-up and no watermark.